<!DOCTYPE html>
<html lang="en">
    <head>
        <meta charset="UTF-8">
        <meta name="viewport" content="width=device-width, initial-scale=1.0">
        <title>from</title>
        <style>
            input{
                outline: none;/*取消点击后产生的边框*/
            }
        </style>
    </head>
    <body>
        <form action="#" method="get">
            <fieldset>
                <legend align="left/center/right/justify">基本信息</legend>
                姓名：<input type="text" name="uname">
                <br>
                <!--name间互斥-->
                单选列表：
                <label>
                    <input type="radio" name="sex" checked>男
                </label>
                <label>
                    <input type="radio" name="woman">女
                </label>
                <label>
                    <input type="radio" name="woman" disabled>中性
                </label>
                <br>
            </fieldset>
            <!--checked:默认选中  disabled:禁止修改-->
            多选列表:<input type="checkbox" checked disabled>a1
            <input type="checkbox">a1
            <input type="checkbox">a1
            <input type="checkbox">a1
            <br>
            下拉列表：
            <select>
                <option selected value="1">b1</option>
                <option value="2">b2</option>
                <option value="3">b3</option>
                <option value="4">b4</option>
            </select>
            <br>
            <textarea style="resize: none"></textarea>
            <br>
            <input type="file">
            <input type="submit">
        </form>
    </body>
</html>